Preliminary research

Cline Kanban WebSocket Hijack

Sagi Layani · Oasis Security · 27 May 2026

AI-collected research leads through 22 September 2026, including targeted additions between broader sweeps. Unranked, incomplete, not community-vetted, and subject to change.

Examines an unauthenticated local WebSocket control channel in Cline Kanban. Runtime messages expose task and workspace identifiers that can be used to attach terminal input, submit prompts and terminate sessions. The report distinguishes control-channel access from the downstream agent’s execution permissions and browser reachability constraints.

Record

Researcher

Sagi Layani

Published by

Oasis Security

Date

27 May 2026

Topic

HTTP

In the archive

• Collected in the 2026 preliminary research sweep

Related sources

• Breaking the Paperclip: When Agent Configuration Becomes a Vulnerability
• Cline Kanban WebSocket Hijack

Tags

• websocket
• ai-agent
• auth-bypass
• info-leak
• attack-chain
• case-study
• owasp-a01-2021

This page is the archive's own catalogue record. The research is the work of Sagi Layani, first published at the original source. Preserved copies are kept so the citation survives its host; this one was last captured on 13 September 2026.